1 //===- MCWasmStreamer.h - MCStreamer Wasm Object File Interface -*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef LLVM_MC_MCWASMSTREAMER_H
11 #define LLVM_MC_MCWASMSTREAMER_H
13 #include "MCAsmBackend.h"
14 #include "MCCodeEmitter.h"
15 #include "llvm/ADT/SmallPtrSet.h"
16 #include "llvm/MC/MCDirectives.h"
17 #include "llvm/MC/MCObjectStreamer.h"
18 #include "llvm/MC/SectionKind.h"
19 #include "llvm/Support/DataTypes.h"
27 class MCWasmStreamer : public MCObjectStreamer {
29 MCWasmStreamer(MCContext &Context, std::unique_ptr<MCAsmBackend> TAB,
30 raw_pwrite_stream &OS, std::unique_ptr<MCCodeEmitter> Emitter)
31 : MCObjectStreamer(Context, std::move(TAB), OS, std::move(Emitter)),
34 ~MCWasmStreamer() override;
37 void reset() override {
39 MCObjectStreamer::reset();
42 /// \name MCStreamer Interface
45 void ChangeSection(MCSection *Section, const MCExpr *Subsection) override;
46 void EmitAssemblerFlag(MCAssemblerFlag Flag) override;
47 void EmitThumbFunc(MCSymbol *Func) override;
48 void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override;
49 bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
50 void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override;
51 void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
52 unsigned ByteAlignment) override;
54 void emitELFSize(MCSymbol *Symbol, const MCExpr *Value) override;
56 void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
57 unsigned ByteAlignment) override;
59 void EmitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
60 uint64_t Size = 0, unsigned ByteAlignment = 0) override;
61 void EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
62 unsigned ByteAlignment = 0) override;
63 void EmitValueImpl(const MCExpr *Value, unsigned Size,
64 SMLoc Loc = SMLoc()) override;
66 void EmitIdent(StringRef IdentString) override;
68 void EmitValueToAlignment(unsigned, int64_t, unsigned, unsigned) override;
70 void FinishImpl() override;
73 void EmitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &) override;
74 void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &) override;
76 /// \brief Merge the content of the fragment \p EF into the fragment \p DF.
77 void mergeFragment(MCDataFragment *, MCDataFragment *);
82 } // end namespace llvm